Thermostatic apparatus.



No. 840,256. PATENTED JAN. 1, 1907. K. HOSTEL. THERMOSTATIG APPARATUS.

'APPLICATION FILED MAE. 30,1906.

2 SHEETS-SHEET l.

/ Nm www HUMAIN l ll llnllll fn: Nomar: PETERs co., wAsmNaTcN, |21:

PATBNTBD JAN'. 1, 1907.

2 SHEETSSHEBT 2.

K ROSTEL THERMOSTATIC APPARATUS.

APPIIGATION FILED MAB so 1906 JZEWJ/ l; l'

nefffe NTED STATES Pagani* orinon.

KARL HOSTEL, OF MONESSEN, PENNSYLVANIA.

THERMOSTATIC APPARATUS.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed March 30, 1906. Serial No, 308,936.

To a/ZZ whom, t may concern: i

Be it known that l, KARL RosTEL, a subject of the Emperor ofGermanyresidingm Monessen, in the county of Westmoreland and State ofPennsylvania, have invented certain new and useful Improvements inThermostatic Apparatus, of which the following is a specification,reference being had therein Y to the accompanying drawings.

This invention relates to certain new and useful improvements inthermostatic alarms; and the invent-ion has for its primary object theprovision of novel means for automatically sounding an alarm when apredetermined temperature is reached within a compartment .or room.

My invention aims to provide a novel thermostatic apparatus particularlyadapted for use iii compartments or buildings where high thermalconditions might endanger the lives of persons within the compartment orbuilding. In this connection the' apparatus is intended for use inlaboratories and the like places, but may also be used similar to anordinary thermometer. To this end l have devised positive and reliablemeans for sounding an alarm of an audible nature when a predeterminedtemperature is reached within a compartment.

Vith the above and other objects in view, which will more readily appearas the nature of the invention is more readily understood, the sameconsists in the novel construction, combination, and arrangement ofparts, to be hereinafter more fully described and then y specificallyclaimed.

Referring to the drawings accompanying this application`V like numeralsof reference designate similar parts throughout the several views of thedrawings, in which`- Figure 1 is a front elevation of my improved.apparatus, a portion of the same being broken away to more clearlyillustrate the interior mechanism thereof. Fig. 2 is a verticalsectional view of the same; Fig. 3, a plan Fig. 4, a horizontalsectional view taken on the li ne XX of Fig. 2 Fig. 5, a side elevationof a float used in connection with the apparatus, and Fig. 6 is a detailview of a portion of the apparatus.

To put my invention into practice, l cor,.- struct my improved apparatusof a suitable casing 1, embodying a base 2, front wall 3, rear wall 4,side walls 5 and 6, and a top plate and cover 7. Upon the base 2, withinthe casing 1, l mount a tank or receptacle 8, carrying anupwardly-extending trough or basin 9. The tank 8 is also provided withan upwardly-extending pipe 10, which supports the contracted neck ortubular portion 11 of an oval-shaped bot-tlvy or receptacle 12, whichextends through the top plate 7 of the casing and is supported in aninverted position thereby.

The top plate or cover 7 directly above the trough or basin 9 isprovided with an opening 14, the one edge of which is slotted, as at 15,to accommodate an upwardly-extending plate 16, carrying brackets 17 17.The outer ends of the brackets 17 17 are provided with o enings 18 18 toreceive a standard or ro 19, carried by a float 20, mounted in thetrough or basin 9. The iioat is of the same area in cross-section as thetrough. or basin 9, and said float is supported in the trough by oil ora similar liquid 21, which extends up into the Abottle or receptacle 12.

lexpose a dial-plate 24, mounted directly behind the front wall 3 of thecasing 1.V Supported by a standard 25 within the casing 1 is arectangular frame 26, in which are journaled two shafts 27 and 28. Uponthe shaft 27 is mounted a large pinion 29, adapted to mesh with a smallpinion 30, mounted upon the shaft 28. The shaft 27 is provided with anoutwardly-extending crank-arm 31, said crank-arm being connected, as at32, to the depending )ortion 33 of the standard or rod 19. The s aft 28extends through the dialplate 24 and is provided with a hand or iinger83. The standard 25 is provided with an' upwardly-extending stub-shaft34, upon which is pivoted a hand or finger 35, the object of which willpresently appear.

In the casing 1 is placed a conventional form of storage battery or drybattery 36, while upon the exterior of the casing, preferably one of theside walls thereof, is placed a conventional form of electric bell 37,the one binding-post 38 of which is connected to one of the poles of thebattery 36 by a wire 39, while the binding-post 4() of the bell isconnected to the stub-shaft 34 of the standard 25 by a wire 41. Theopposite pole of the battery 36 is connected by a wire 42 with the frame26, said frame being suitably in- IOO sulated from the stub-shaft 34 byconstructing the standard 25 of well-seasoned wood. By the hand oriinger 33 contacting with the hand or finger 35 an electrical circuit iscompleted which rings the bell 37.

By referring to Fig. 1 of the drawings it will be observedv that thedial-plate 22 is graduated similar to a thermometer, and when myimproved apparatus is in operation the hand or iinger 33 is adapted todesignate the temperature of the compartment or room in which theapparatus is located. This is accomplished by the expansion andcontraction of the air within the bottle or receptacle 12, the expansionof the air tending to depress the oil or liquid contained therein andelevate the float 20, which, through the medium of the standard or rod19 and the crank-arm 31, partially rotates the shafts 27 and 28 andpositions the inger or hand 33 correctly at the number of degrees oftemvperature indicated upon the dial-plate 22.

Assuming that the temperature of a room or compartment is to bemaintained below a certain number of degreesw-for instance, ninetydegrees-the hand or finger 35 would be set at the graduation 90. Shouldthe air withinthe receptacle or bottle 12 expand sufliciently, the handor finger 33 will be moved around to engage the hand or finger 35,completing an electrical circuit which will cause an alarm to besounded, indicating that the compartment or room in which the apparatusis located has reached ythe teinperature for which. the apparatus waslset.

It will be ap' arent from the foregoing del scri ption that have deviseda simple and inexpensive apparatus which can be conveniently used fornumerousv purposes notherein speciiied. Therefore I desire it to'beunder# stood that I may employ the apparatus for various purposes, andwhile I have `herein .described `the preferred form of construction itis obvious that such changes as are permissible'by'the appended claimsmay be resorted to without departingfrom 'the spirit and scope of theinvention.

The alarm-'bell 37 need not `be necessarily' located uponthe apparatus,as the bell may 'beplaced in another compartment from that :in whichtheapparatus is'located, and one bellmay readily serve as an alarm for aplurality of apparatus.

What I claim, and desire rto secure by Letters Patent, is-

1. In an apparatus of the type described, thecombination with a suitablecasing, of a tank mounted in said casing, a trough communicating withsaid tank, a receptacle mounted in the top of said casing andcommunicating With said tank, a iioat mounted in said trough andactuated by the eXpansion and contraction of the air within saidreceptacle, a dial-plate mounted in said casing and having graduationsarranged thereon, a hand carried in front of said dial-plate andactuated by said float, a hand adapted to cont act with the first-namedhand, to sound an alarm, substantially as described.

2. A thermostatic alarm comprising a casing having a graduateddial-plate, a tank mounted in the casing, a trough mounted on said tankand in communication therewith, brackets carried by the casing, a floatarranged in the trough and having a rod eX- tending through saidbrackets, a receptacle mounted on the casing and having a neck eX-tending into he casing and communicating with 'the tank, a standardmounted in the casing, a frame connected to said standard, shafts,journaled in said yframe and meshing pinions on said shafts, anarmconnected to one of said shafts and attachedat its outer end to the rodof said float,- and hands carried by the other ends of said shaftsadapted in one position. to complete an electrical circuit and sound analarm.

3. In an apparatus of thetype described, the combinaticn witha suitablecasing, and a tank therein, a trough communicating with the tank, areceptacle .mounted on the casing and having a neck extending into thecasing and communicating with-thetank, a iioat in said trough actuatedbythe eXpansion and contraction of air within'the receptacle, agraduated dial-plate carried by the casing and mechanism actuated by thefloat in its rise and lfallin the troughfor completing an electricalcircuit to sound an alarm.

In testimony whereof 'I afliX my signature in the 'presence of twowitnesses.

KARL HOSTEL.

I/Vitnesses:

- H. C. GATTER,

FRANK 'BUMEIL TOO

